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Recreational Mathematics
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Demonstrations 761  780 of 976
Proof of Proposition 28, Book XI, Euclid's Elements
Another Dissection of Two Rhombic Solids into an Icosidodecahedron and a Rhombicosidodecahedron
Dissection of the Oblate Golden Rhombohedron
Definitions of Hill's Tetrahedra
SixPiece Dissection of Hill's Tetrahedron of Type 3 into a Triangular Prism
FourPiece Dissection of Hill's Tetrahedron of Type 2 into a Triangular Prism
Dissection of Hill's Tetrahedron of Type 1
Two Proofs of the Equality of the Volumes of a Box and a Parallelepiped
Swirl Points
FiveSquarestoOne Dissection
Dissection of a Truncated Octahedron into Hexagonal Skew Prisms and Parallelepipeds
Dissection of Two Rhombic Solids into an Icosidodecahedron and a RhombIcosiDodecahedron
Dissection of an Oblique into a Right Prism
Taking Apart a Cube
Equidecomposition of a Rhombohedron, Hexagonal Prism, and a Rhombic Dodecahedron
Tiling Space with a SchmittConway Biprism
Dissection of a Rhombohedron into a Right Prism with the Same Base
Nutts Puzzle
Preferred Values of Collatz Paths
Dissection of a Pentagonal Antiprism into a Metabidiminished Icosahedron
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